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#!/usr/bin/env lua
local curl = require 'lib.curl'
local util = require 'lib.util'
local attr = require 'lib.attr'
local domain = 'https://www.opensubtitles.org'
local ids_fetch = function (page)
local iter, no_name, line, id, name, tab
tab = {}
no_name = 0
iter = page:gmatch('[^\n\r]+')
while true do
line = iter()
if not line then
break
end
id = line:match('/en/subtitles/%d*')
if id then
id = id:match('%d+$')
line = iter() -- movie
if line:find('%.%.%.$') then
-- name cuts off...
name = line:gsub('"[^"]*$', '')
name = name:match('[^"]+$')
else
name = line:gsub('<br/><a rel.*$', '')
name = name:match('[^>]+$')
end
if not name then
line = iter()
if line:find('^%[S%d%dE%d%d%]$') then
-- it's a series
line = iter()
if line:find('%.%.%.$') then
name = line:gsub('^.*title="', '')
name = name:match('[^"]+')
else
name = line:match('[^<]+')
end
else
-- no name
name = tostring(no_name)
no_name = no_name + 1
end
end
tab[name] = id
end
end
return tab
end
local search_ohash = function (ohash, name, lang)
local fetch, hcode, url, id
url = domain .. '/en' .. '/search/sublanguageid-' .. lang ..
'/moviehash-' .. ohash
fetch, hcode = curl.get(url, nil, nil)
id = attr.fuzzy(name, ids_fetch(fetch))
if hcode and not id then
util.error('opensubtitles: search_ohash failed')
end
if id then
return domain .. '/en/subtitleserve/sub/' .. id
end
end
local search_filesize = function (filesize, name, lang)
local fetch, hcode, url, id, a
a = attr.build(name)
url = domain .. '/en' .. '/search/sublanguageid-' .. lang
if a.season and a.episode then
url = url .. '/season-' .. a.season .. '/episode-' .. a.episode
end
url = url .. '/moviebytesize-' .. filesize
fetch, hcode = curl.get(url, nil, nil)
if not hcode then
return nil
end
id = attr.fuzzy(name, ids_fetch(fetch))
if hcode and not id then
util.error('opensubtitles: search_filesize failed')
end
if id then
return domain .. '/en/subtitleserve/sub/' .. id
end
end
local url_encode = function (str)
local url = ""
for c in str:gmatch('.') do
if c:find('%w') then
url = url .. c
else
url = url .. '%' ..
string.format('%x', c:byte()):upper()
end
end
return url
end
local suggest_id = function (name)
local url, fetch, hcode, id
url = domain .. '/libs/suggest.php?format=json3&MovieName=' ..
url_encode(name)
fetch, hcode = curl.get(url, nil, nil)
if not hcode then
return nil
end
id = fetch:match('"id":%d+')
if not id then
return nil
end
return id:match('%d+')
end
local search_name = function (name, lang)
local fetch, hcode, movie_id, url, id
movie_id = suggest_id(name)
if not movie_id then
return nil
end
url = domain .. '/en/search/sublanguageid-' .. lang ..
'/idmovie-' .. movie_id
fetch, hcode = curl.get(url, nil, nil)
if not hcode then
return nil
end
id = attr.fuzzy(name, ids_fetch(fetch))
if not id then
util.error('opensubtitles: search_name failed')
end
if id then
return domain .. '/en/subtitleserve/sub/' .. id
end
end
local search = function (path, out, info)
local ohash, link, name, lang
lang = info.iso639_2_lang or 'eng'
name = info.name or util.string_vid_path_to_name(path)
if util.file_exists(path) then
ohash = util.opensubtitles_hash(path)
link = search_ohash(ohash, name, lang)
end
if not link then
link = search_filesize(info.filesize, name, lang)
end
if not link then
link = search_name(name, lang)
end
if link then
return curl.zip_link_to_file(link, nil, out)
end
end
return {
search_ohash = search_ohash,
search_filesize = search_filesize,
search_name = search_name,
search = search
}
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